155525340 has 24 divisors (see below), whose sum is σ = 435471120. Its totient is φ = 41473408.

The previous prime is 155525311. The next prime is 155525369. The reversal of 155525340 is 43525551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (155525311) and next prime (155525369).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 155525298 and 155525307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1295985 + ... + 1296104.

It is an arithmetic number, because the mean of its divisors is an integer number (18144630).

Almost surely, 2^155525340 is an apocalyptic number.

155525340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155525340 is an abundant number, since it is smaller than the sum of its proper divisors (279945780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155525340 is a wasteful number, since it uses less digits than its factorization.

155525340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592101 (or 2592099 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 155525340 is about 12470.9799133829. The cubic root of 155525340 is about 537.7747245322.

The spelling of 155525340 in words is "one hundred fifty-five million, five hundred twenty-five thousand, three hundred forty".